Starting and Stopping Rigid Body Simulations
Under rigid body tools on the toolshelf there should be a "Bake to keyframes" option. You can run your simulation, and then bake it all to keyframes.

Then in the dopesheet, you can move these keyframes later in time starting from when you want to animate the camera.

E.g.


Simulate 20 frames
Move keys on frames 11 to 20 to frames 16-25
Animate camera between frames 11 and 16